“retrospective study”的概念、定义、翻译、参考文献-科学参考

单词	retrospective study
释义	retrospective study Encyclopedia 理学临床试验的自适应性设计释 retrospective study观察性研究在自然状态下对研究对象的特征进行观察、记录，并对结果进行描述和对比分析的研究。 Mathematics retrospective study回溯研究
随便看	pumping station with tubular pumps pumping station with turbine pumps pumping station with well pumps pumping system pumping test pumping unit pumping unit counterbalance pumping unit dynamometer card pumping unit micro-control chart pumping unit soft start pumping unit suspension point load pumping wave pumpkin seed and husk pump loss pump noise pump oil pump operating point pump power pump pressure pump probe pump-probe pump probe spectroscopy pump-probe spectroscopy pump probe technique pump-probe technique

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。